Ryan Lee 69e83e5527 apparmor: ensure WB_HISTORY_SIZE value is a power of 2 ...

[ Upstream commit 6c055e6256 ]

WB_HISTORY_SIZE was defined to be a value not a power of 2, despite a
comment in the declaration of struct match_workbuf stating it is and a
modular arithmetic usage in the inc_wb_pos macro assuming that it is. Bump
WB_HISTORY_SIZE's value up to 32 and add a BUILD_BUG_ON_NOT_POWER_OF_2
line to ensure that any future changes to the value of WB_HISTORY_SIZE
respect this requirement.

Fixes: 136db99485 ("apparmor: increase left match history buffer size")

Signed-off-by: Ryan Lee <ryan.lee@canonical.com>
Signed-off-by: John Johansen <john.johansen@canonical.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2025-08-28 16:24:11 +02:00

..

apparmor.h

…

apparmorfs.h

…

audit.h

…

capability.h

…

cred.h

…

crypto.h

…

domain.h

…

file.h

…

ipc.h

…

label.h

…

lib.h

…

match.h

…

mount.h

…

net.h

…

path.h

…

perms.h

…

policy_ns.h

…

policy_unpack.h

…

policy.h

…

procattr.h

…

resource.h

…

secid.h

…

sig_names.h

…

task.h

…